@textc: rgb(32, 147, 255);
@width: 1100px;
@widthimg: 1050px;
@backc: rgb(44, 44, 44);
@topnav: rgb(0, 0, 0);
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
.all-page {
  min-width: 1200px;
}
#lunbo {
  width: 100%;
  height: 430px;
  background-color: @backc;
}
.cycle {
  left: 0;
  right: 0;
  position: absolute;
  background-color: @backc;
  width: 90%;
  height: 420px;
  z-index: 90;
  margin: 0 auto;
  .imgs {
    width: 95%;
    height: 400px;
    margin: 0 auto;
    height: 430px;
    background-color: @backc;
    overflow: hidden;
    transition: all 0.5s;
    cursor: pointer;
    text-align: center;
    &:hover {
      #goNext {
        right: 35px;
        display: block;
      }
      #goPre {
        left: 35px;
        display: block;
      }
    }
    img {
      transform: translateY(-300px);
      overflow: hidden;
      width: 75%;
      transition: all 1s;
      background-repeat: no-repeat;
      background-size: cover;
      transition: all 0.5s;
    }
    .btn {
      width: 30px;
      height: 60px;
      position: absolute;
      top: 170px;
      z-index: 100;
      background-color: black;
      opacity: 0.3;
      color: white;
      border: none;
      transition: 0.5s;
      cursor: pointer;
      &:hover {
        opacity: 0.6;
      }
    }
    #goPre {
      left: -40px;
      display: none;
    }

    #goNext {
      right: -40px;
      display: none;
    }
    .firs {
      position: absolute;
      bottom: 0;
      left: 25%;
      span {
        position: absolute;
        bottom: -1px;
        left: 0;
        color: rgb(240, 8, 182);
        font-size: 4px;
      }
    }
    .secs {
      position: absolute;
      bottom: 0;
      right: 25%;
      span {
        position: absolute;
        bottom: -1px;
        left: 0;
        color: rgb(240, 8, 182);
        font-size: 4px;
      }
    }
  }
}
.hide {
  display: none;
  // opacity: 0;
}
#select {
  max-width: 120px;
  max-height: 26px;
  float: left;
  padding: 0 25px;
  outline: none;
  background-color: whitesmoke;
  z-index: 202;
  position: absolute;
  border-left: 1px solid whitesmoke;
  border-right: 1px solid whitesmoke;
  cursor: pointer;
  span {
    font-size: 12px;
  }
  div {
    top: 0;
    left: 80px;
    width: 5px;
    position: absolute;
    color: gray;
  }
  #up {
    opacity: 1;
  }
}
.circle {
  width: 100%;
  margin: 0 auto;
  height: 100px;
  background: linear-gradient(to top, @backc, rgba(255, 255, 255, 0));
  position: absolute;
  left: 0px;
  bottom: -10px;
  .circle-box {
    width: 200px;
    height: 20px;
    margin: 70px auto;
    display: flex;
    justify-content: center;
    span {
      margin-right: 10px;
      margin-top: -14px;
      border-radius: 50%;
      width: 15px;
      height: 15px;
      background-color: rgba(248, 248, 248, 0.315);
    }
  }
}

.mid-nav {
  width: 100%;
  height: 150px;
  background-color: rgb(249, 249, 249);
  .mid-nav-box {
    width: 90%;
    height: 100%;
    margin: 0 auto;
    display: flex;
    .classnav {
      margin-right: 30px;
      flex-grow: 1;
      position: relative;
      h4 {
        margin-right: 10px;
        margin-top: 10px;
        margin-left: 25px;
        color: gray;
      }
      div {
        display: inline-block;
        height: 100px;
        margin-top: 15px;
        margin-left: 25px;
        // display: flex;
        // justify-content: left;
        // flex-wrap: wrap;
        a:visited {
          color: black;
        }
        a {
          height: 30px;
          font-size: 12px;
          line-height: 30px;
          list-style: none;
          display: inline-block;
          margin-right: 20px;
          &:hover {
            color: @textc;
          }
        }
      }
    }
  }
}
